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    Neuron. 2002 Jan 17;33(2):233-48.

    Slit proteins prevent midline crossing and determine the dorsoventral position of major axonal pathways in the mammalian forebrain.

    Bagri A, Marín O, Plump AS, Mak J, Pleasure SJ, Rubenstein JL, Tessier-Lavigne M.

    Source

    Department of Anatomy, Howard Hughes Medical Institute, CA, USA.

    Abstract

    We report that Slit proteins, a family of secreted chemorepellents, are crucial for the proper development of several major forebrain tracts. Mice deficient in Slit2 and, even more so, mice deficient in both Slit1 and Slit2 show significant axon guidance errors in a variety of pathways, including corticofugal, callosal, and thalamocortical tracts. Analysis of multiple pathways suggests several generalizations regarding the functions of Slit proteins in the brain, which appear to contribute to (1) the maintenance of dorsal position by prevention of axonal growth into ventral regions, (2) the prevention of axonal extension toward and across the midline, and (3) the channeling of axons toward particular regions.

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    PMID:
    11804571
    [PubMed - indexed for MEDLINE]

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